Audible signal



n; 2Q, E35. I vAsoLD v 2,033,957

` AUDIBLE SIGNAL Filed April 5, 1929 f `aa .ell,

Patented Aug'zo, 1935 PAT orsi es i L "2,011,957 AUDIBLE SIGNAL eoi Il. .Vasold, drian `Mich.,y assignorfto -v Schwarze Electric-Company,Adrian, Mich., a

' `corporatio-n'ofilliichigan v Application-Aprila 1929, seriammsmvs comme (c1.j'177,-7

4 and kplate l5, as well as th'disk m through f i.This invention relatesfto audiblesignals'. 'i This invention 7Vhas utility whenincorporated in electric horns, more respecially of the magnetic type as involvingfeatures of construction and ade ju'stment therefor. 'if v Referring to the drawing:

Fig. 1 is aside elevation of an electric horn-type 'Y Y H l :to have rising therefrom contact point 42.

` of signal, embodying features of theinvention;

. flig. 2isa View of the horn of- Fig. 1, looking-into the amplier portion thereoi;Y Y

Fig. 3 is a View lof the hornof 1, looking the rearor-shell portion thereof;

. Fig. 41s a View looking into'the right'of rig. 1,

with the shell removed; l v

' Fig; 5 is a partial section on the lin'e V--V, Fig. 4; Fig. Sis a detail view of the control or 'automatic switch'adjustable unit, in perspective Fig. 7 is a 4; and

Figsis a section on menne vnr-vinyrig. 4;'

f Bracket I, from Va fixed structure'when the de-iV vice is Yused vin ay building such as traffic signal or `when used infmotorvehicles for the xeds'upl port, is engaged by-bolts 2 having nuts 3 thereon,

thereby effecting assemblyfof this device, comprising a minor housingl portion.v Y4', marginally terminating in flange 5. This minor housing portion 4 has centralfopenin'g '6 fromwhich extends the megaphone oramplier `1. Resting on seat 3 adjacentfthe ffra'me 5` is ring lpacking P or gasket@ upon which rests diaphragm I fast with stem- H carrying resonator I2 fast therewith by rivet 13; This .rivet I3 is toward the amplifier 'I'.While/the stem II extends oppositelytherefrom through opening VI4 in plate I 5having marginal' offset portion IB within the flange 5. In addition opening I4 in the plate I5 `have tongues I9 riveted therein for arch member 20 bridging the opening I4. Core piece 2Igthrough this openingis adjusted byY nut 22. `This core piece'2l extends towardv the opening Ithrough coil 23, between the cross-over portion of this arch' member 20 and the Y v arch portion of minor member 24.y The member toV providingv shoulder 23.

24 has opening'25 through which .the core2'I exy tends forslight clearance` 26 as to the reduced 4end .21 of the stem Il as an armature, thereby Electric energy source battery 29 having ,one

side to ground 30 has conductor 3| therefromto manually controllable horn switch 32 thence byrv line 33 to terminal34 insulated from the housing section on the lineYII-VII, Fig.

n 21; v l. y

Y ing'through guide ,31 of lead 3 3 therefrom tol terminal 39 asia `p"late]insulatedbylamina 40 from spring'mountingplate 4I'. This plate 3B extends Mounted'on this pla'teisii is 'insulation plate 43 "over which is'fmetal plate 44 -havingembossed portion 45`irom plate' extending tovinsulation from rmounting bolts-"41.` These mounting bolts memberl 48 and top rvlocking washer 49.` This the contact-p ointj42 in this automatic switch device. y to rest upon the .shoulder 28 of the armature Y As ,the manual switchZ-isclosed, electric cir-v c'uitfis completed from ther battery 29-tojthisf switch 32, thence by line 33, terminal 34, conducby terminalf31, conductor ,38,plate 39, automatic Aswitclfi contacts 42, 50, vto the plate4 grounding 43 through openingr 46 in spacing the terminal 39 n plate 44 extends `to have contactpoint 5llopposing Y The plate member 44 extends therebeyond to the screws '41 andmounting plate 4I anchored Winni' the plate I5 by boli-,s 5r. 'Y A'IJnisfgromic connectioninstead oflbein'g'fromthe mounting plate 4 I may be from this plate 44 through the armature I I, 21, in the disk 41 tothe housing 4, the bolts 2,

' `and the mounting bracket I, as completing the vground from-the groundll totheloatteryl 29.

projecting overhang 55 having, threa-ded opening 'itherein engag'edby. bolt 51,' 'aboutwhich is, between this overhang 55 and Ythe offset portion I5 of the plater I 5,:a compression helical spring 58.

This bolt 51 protrudes through the plate l5, the y 'Y disk "I0, gasket' Q yand housing4 to he exteriorly accessible. Accordingly, placing a screw driver in the head of 'this bolt 51 and rotating such either The screws orv bolts/41 'extending' through the `flexible spring' orv yieldable mounting plate 4l Y have thread assembly with bracket 52 in recess 53 Y i of the plate I5. `This bracket protruding from Y v:this recess 53fh`as riser portion 54 and outwardly clockwise or counter-clockwise direction vvaries the compression of the spring58 and rocks this bracket as permitted by the spring steel mounting platev 4I. There"is accordingly a definite'` control eiected for the position of the overhang 44 resting on the shoulder 28. Thismeans that 'in the energizing of the. coil 23 by closing the switch 32,1 the clearance between the elements y 2B, 44, may be varied, controlling the'breaking of the circuit'at the automatic switch 42, 50.' At

once this circuit is broken,l the coil 23 is de energized to allow the spring plate 43, as bearing against the shoulder 278, to determine the clearance 25, and asthe switch 42, 5D, is again closed', the circuitis completed and there is the resulting vibratory action from the coil 23, as aV solenoid, transmitted tothe disk |0to be amplified by the megaphone Vl. The vibratory :action thusipro duces the audible signal and this external adjustment is one which may be varied to respond to the battery or energy source conditions forV desired operation and there may be lslight control` for tone effect as well. Y

Itis to beseen in this connectionthat the elec Ytric actuator and its assembly boltsjare lallV mounted on the plate l5 and at no time require any disturbance relatively to the actuated mem#` ber for'the stem l l. The core 2| is herein shown as having central threaded recess 59 forbolt asthrough'opening 6l Vin 'concave shell 62 anjchored by this single vholding bolt l!)l inr this assembly in completing the housing ofrthis device.

This shell 62 has marginal flangerBS. seating within the flange 54 of-the minor housing 4. It is accordingly seen that thea-mounting structure,

not only asto theiixed or'flexible assembly of the bracket I but as to the. mechanism, is at allV times a complete assembly, Ywith 'access to the parts by the removal of the singlefbolt-ll.

Furthermore, it is not necessary in the normal upkeeping operation of this structure that there be any removal'of the housingor disfassembly of the housing structure for the reasonnthat usual control adjustments can all be accurately deternnnedbyA operatingthe-bolt 5l.Y i z What is claimed and itis desired to secure-by United, States Letters Patent: A 1. A horn embodying a diaphragm, a housing therefor, andan interrupter in thehousing comprisingatexible plate member, anchoring means :mounting the plate member and fixing an axis Yof :fiexureV therefor parallel to the diaphragm and `spaced outward fromthe axis of the-diaL pliragm, a pair of fcontact carriers mounted on the plate member and extending therefrom different distances toward `the-axis ofthe diaphragm actuw ating means for the interrupter iixed'wi-th the diaphragm` and engaging the carrier of greater ex tent toward the axis of the diaphragm from the axis of iiexu'retoeffect disturbance of coopera- Vtion between thecontacts of said carriers, `and plate adjustingV means` forgthe interrupterV away from' the axis ofthe, diaphragm more remotev than the axis ofiiexure,` including a vscrew having .threaded engagement with the plate, `said-screw having an exposedoperating portion, and a compression helical spring about the screw between the housing andv said plate. j i i `2. A horn embodying a diaphragm, Va housing therefor, andan interrupter in the housing :com-

prising a flexible plate member, anchoring means mounting the plate member and fixing an axis of flexure therefor parallel to the diaphragm and spaced'outward from the axis of the diaphragm,

y a pair of contact carriers mounted on the plate member and extending therefrom different dis- `tances toward the axis ofthe diaphragm, actuating means for the interrupter fixed with the Y diaphragm and engaging `the 'carrier of greater extent toward jthe axis of ,the diaphragm from .the axis of exure to effect disturbance of cooperation between the'contacts of said carriers,

.and plate adjusting means for the interrupter away from the'axis ofY the diaphragm more re- 5' `mote thanthe axis'of exure.

j x3, In an audible signal device the combination vof a frame, a diaphragm on one siderthereof, a

, shell providing a housing for the diaphragm,

means securing the diaphragm and shellto the frame, anj actuator having actuating means forV shifting yzthe diaphragm,r a control member, a flexible mounting, means for securing the mount- Ving to the framejin providing an axis of flexure therefor fparallel tothe diaphragm and spaced outward from the axis of the diaphragm, means assembling the y'control member with said flexible mounting andfproviding an extension toward the `actuator fromthe flexible mounting, an interrupter carried Vby jsaid extension and operable by theaotuator, said memberhaving oppositely from the actuator an armfrom the mounting, a spring plate member parallelto the `diaphragm and outward-from thev axis 'of thej` diaphragm, a first Contact carrier on the plate member and extending toward `the axis; ofjthe diaphragm, a second Contact carrier on-the plate member and extending beyond the contact'of the first contact carrier on thefplate memberftoward the axis ofthe dia# phragm,4 the contacts 'of saidcarriers being normally in engagement, an armature for operating the-diaphragm, reciprocation effecting means for the armature,saidarmature in its reciprocation being effective to'` shift'the `second contact carrier in disturbing` the'frelation between the contacts,

and plate member'adjustingv means for the interrupteraway from the axis of the diaphragmY more `remote than` the Vaxis `of exure of `said platememberr LEO L. VASOLD. 

